一种提高钛合金化学镀镍层结合力的方法  

A Method to Improve the Adhesion of Eleetroless Nickel Coating on Titanium Alloy

作　　者：杜楠[1] 陈庆龙[1] 刘刚[1] 宁铮[1] 舒伟发[1] 

机构地区：[1]南昌航空大学轻合金加工科学与技术国防重点学科实验室,江西南昌330063

出　　处：《材料保护》2011年第11期61-63,8,共3页Materials Protection

摘　　要：为了提高钛合金与化学镀镍层的结合力,以微孤氧化、HCl和HF活化对钛合金作前处理后再进行化学镀镍并在300℃下进行热处理,研究了镀镍层与基体的结合力及其硬度。结果表明:钛合金化学镀镍前进行微弧氧化可以显著提高镀镍层的结合力,镀层经热处理后结合力得到进一步提高,临界载荷为35.30 N,硬度达1 186.9 HV。Pretreatment such as micro-arc oxidation and activation by aqueous solutions of HCl and HF was conducted for Ti alloy before Ni electroless plating,which was then combined with post heat -treatment of electroless Ni coating at 300℃so as to improve the adhesion of electroless Ni coating to Ti alloy substrate.The hardness and adhesion to substrate of the Ni coating were measured.It was found that micro-arc oxidation of Ti alloy substrate before electroless Ni plating helped to improve the adhesion of the coating to substrate,and heat - treatment contributed to further improved adhesion of the Ni coating.Resultant heat-treated electroless Ni coating had a critical load of 35.30 N and hardness of 1186.9 HV.

关 键 词：钛合金 微弧氧化 化学镀镍 结合力 硬度 

分 类 号：TQ153.12[化学工程—电化学工业]